CATALYST SYSTEMS FOR PREPARING 1-HEXENE AND/OR 1-OCTENE FROM ETHYLENE

摘要

PURPOSE: A selective ethylene oligomerization catalytic system and a selective production method of an ethylene oligomer using the same are provided to improve the yield of hexene or octane, and to facilitate a following separation and purification process by reducing the production internal olefin when producing 1-hexene and 1-octene. CONSTITUTION: A selective ethylene oligomerization catalytic system contains a chrome compound, a ligand denoted by chemical formula 1, and an activator. In the chemical formula 1: X1-X4 are halogen, independently; R1 and R2 are hydrocarbyl, substituted hydrocarbyl, hetero hydrocarbyl, or substituted hetero hydrocarbyl, independently; and R3-R18 are hydrogen, hydrocarbyl, substituted hydrocarbyl, hetero hydrocarbyl, substituted hetero hydrocarbyl, or halogen.